Advances of conductive hydrogel designed for flexible electronics: A review.

In recent years, there has been considerable attention devoted to flexible electronic devices within the realm of biomedical engineering. These devices demonstrate the capability to accurately capture human physiological signals, thereby facilitating efficient human-computer interaction, and providing a novel approach of flexible electronics for monitoring and treating related diseases. A notable contribution to this domain is the emergence of conductive hydrogels as a novel flexible electronic material. Renowned for their exceptional flexibility, adjustable electrical conductivity, and facile processing, conductive hydrogels have emerged as the preferred material for designing and fabricating innovative flexible electronic devices. This paper provides a comprehensive review of the recent advancements in flexible electronic devices rooted in conductive hydrogels. It offers an in-depth exploration of existing synthesis strategies for conductive hydrogels and subsequently examines the latest progress in their applications, including flexible neural electrodes, sensors, energy storage devices and soft robots. The analysis extends to the identification of technological challenges and developmental opportunities in both the synthesis of new conductive hydrogels and their application in the dynamic field of flexible electronics. • The most important thing is that at the end of each section, we not only summarize this section, but also put forward many of our own opinions and prospects for future research directions, which are not mentioned in most reviews. • Advancing the Field of Conductive Hydrogels Synthesis: This article presents a comprehensive exploration of cutting-edge techniques in the synthesis of conductive hydrogels, shedding light on the use of innovative materials such as MXene, liquid metals, and so forth. • Pioneering Applications of Conductive Hydrogels in Biology: Our work provides a comprehensive survey of the design and utilization of flexible neural electrodes, sensors, and other devices built upon the foundation of conductive hydrogels. • Shaping the Future of Conductive Hydrogels and Flexible Electronics: Building upon the systematic review of current research, this article offers a forward-looking perspective on potential enhancements. • We propose avenues for optimizing the performance of conductive hydrogel materials and fostering innovation in the realm of flexible electronic devices. [ABSTRACT FROM AUTHOR]